swarms

Fracking Has Made Oklahoma As Earthquake-Prone As San Francisco

Maintenance workers inspect the damage to one of the spires on Benedictine Hall at St. Gregory’s University following an earthquake in Shawnee, Okla, Nov. 6, 2011. (AP/Sue Ogrocki)
 PAWNEE, OKLAHOMA– For the last several years, something strange has been going on in Oklahoma. While the occurrence of earthquakes in the state usually hovers between one to three quakes annually, Oklahoma is now averaging one to three significant earthquakes per day.